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Increasing Risk for Flash and River Flooding Through the Weekend

A storm system will track across the central U.S. and set the stage for severe thunderstorms and widespread heavy rainfall through the weekend. There will be a threat for flash and river flooding for portions of the Southern Plains into the Upper Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72° N Lon: 96.67° W Elev: 748 ft.

Mostly Cloudy

80°F

27°C

Humidity 68%
Wind Speed SE 7 mph
Barometer 29.60 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 28 Apr 7:15 pm CDT
Detailed forecast for

Grayson County

Tonight
Mostly cloudy with a 30 percent chance of showers and thunderstorms. Lows in the lower 70s. Southeast winds 10 to 15 mph becoming south 15 to 20 mph after midnight.
Saturday
A chance of showers and thunderstorms in the morning...then showers and thunderstorms in the afternoon. Some thunderstorms may be severe in the afternoon. Highs in the upper 70s. Southwest winds 10 to 20 mph with gusts to around 30 mph. Chance of rain 80 percent.
Saturday Night
Cloudy with showers and thunderstorms likely. Much cooler. Less humid with lows in the lower 50s. Northwest winds 10 to 15 mph. Chance of rain 60 percent.
Sunday
Mostly cloudy in the morning...then becoming partly sunny. Much cooler with highs in the lower 60s. West winds 10 to 15 mph increasing to 15 to 20 mph in the afternoon.
Sunday Night
Partly cloudy. Lows in the mid 40s. West winds 10 to 15 mph decreasing to 5 to 10 mph after midnight.
Monday
Sunny. Not as cool with highs in the mid 70s.
Monday Night
Mostly clear. Not as cool with lows in the mid 50s.
Tuesday
Mostly sunny. Highs in the upper 70s.
Tuesday Night
Mostly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the lower 60s.
Wednesday
Mostly cloudy in the morning...then becoming partly sunny. A 40 percent chance of showers and thunderstorms. Highs in the lower 70s.
Wednesday Night
Mostly cloudy in the evening...then becoming partly cloudy. Lows in the lower 50s.
Thursday
Mostly sunny. Highs in the lower 70s.
Thursday Night
Mostly clear. Lows in the lower 50s.
Friday
Sunny. Highs in the mid 70s.



Click Map For Forecast
408 PM CDT Fri Apr 28 2017
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database